The prolonged knot is still used on classic tall ships to protect the sails from chafing against the hardware that connects the boom to the mast. The classic cod fishing schooner Bowdoin that sails out of Maine can be seen with these in place on her main mast.
Details
Care
Durable and made to last through all weather conditions. To clean, let dry and knock off dirt. Do not soak or use degreaser or detergents.